Pinion C1.9XR 9-Speed Wide-Ratio Upgrade - For Catrike (568% Gear Range) - The Pinion C1.9XR 9-Speed XR (Extra wide range) is engineered with 9 distinct gears, making it perfect for situations where riders need quick access to both very low and very high gears, such as on steep climbs or during fast descents. Unlike standard cassettes that feature closely spaced gears, the C1.9XR has larger jumps between gears, facilitating greater adaptability to various terrains. The gears are situated within the hub, which eliminates the necessity for external derailleurs, resulting in a clean and low-maintenance drivetrain. The gearbox provides 9 unique gear options, striking a good balance between a wide range and manageable shifting. When comparing it to other Pinion models: -C1.12: This model offers a higher gear count (12-speed) and features smaller gear steps, which enable better cadence control and smoother transitions for gradual terrain changes. -C1.6: A lighter weight option that has a smaller gear range.